Cooling-liquid-pump mounting for internal-combustion engines



July 10,| 1923. 1,461.71]

A. A. BULL COOLING LIQUID PUMP MOUNTING FOR INTERNAL COMBUSTION ENGINES Filed Feb. 9 1920 3 ARTHUR A. Dum. lfl'oz non LA JA Patentcd July 10, 1923.

` UNiTED STATES l 4 l 1,461,711 PATENT OFFICE.

ARTHUR A. BULL, 0F DETROIT, HIUFIGAN, ASSIGNO T0 G HUTUBS 00B; POBATIONQ 0F DETROIT, MIGEIGAN, A CORPORATION 9F DELAWARE.

OOOLIHG-LIQUID-Pm IOUNTING FOB INTERNAL-GOHBUSTION Gm Appllestlonled February 9, 1920. Serial No. 357,447.

`which form s part of this specification.

. My invention relates to internal combustion engines; and particularly to cooling means-associated therewith for preventing the temperature of the engine, or of a part thereof, fromrising to too high a temperature when the e is in use.

The principal'o ject of my invention is t0 provide an improvui p'ump mounting for supporting the pump which is commonly used in connection with the cooling sstems of internal combustion engines, and t e purpose of which is-to cause a. ilow of cooling liquid to occur through a. jacket space of the engine; such picket space heing ordinarily associated with the cylinder or cylinders of the engine, or a jacket s ace within a head which closes the ends o the c linders' and ,which carries the valves of the'engine; although as a matter of course the jacket ace to which the cooling liquid is supp ied by the pump may be any space or assage extending or located adiacent an e einen or art of the engine which requires to be cooed, and thro h which va stream of cooling liquid is ca to yflow by the pump.

A further object of my invention is to provide an improved pump structure and mounting or support therefor which may be conveniently assembled with the engine, and conveniently disaembled therefrom should it become necessa or desirable to do so; which will be Simp e in construction the engine, to thereby accomplishlthe cool- -lu of various elements or parts thereof.

y invention is illustrated in its preferred form inthe drawing accompanying and forming a part of this speoilication; although it will be appreciated that my inventon may be emb ied in various other s ecific forms and that the same includes l such variations and modications of the particular embodiment thereof illustrated in the drawing as come within the Scope of the following description and the concludin claims.

eferring now to the drawing:

Figure 1 is a view showing an internal -coriibuston engine equipped with my invention in side e ovation.

Figure 2 is u. view upon a larger scale showing the engine shown in Figure 1 in end elevation, certain portions being broken away Yto better illustrate other features of my? invention.

igure 3 is a view showing a. section upon a vertical plane indicated by the line 3, 3, Figure 2; except that the inlet passage to the pump is shown in section in this view whereas it is commonly arranged at an angle to the center line of the engine, as shown in elevation in Figure 2.

Figure 4 is a. fragmentary view showing a section upon a plane indicated by the line 4, 4, Figure 2.

Fi re 5 is a fragmentary view showing the riviimemher through which the impalier of e pump is driven 'from the driv ing shaft therefor. 1

Mv invention is illustratedgherein as 'ap- `glied to a multiple cylinder internal coinustion engine o the Vype the two parts or ,blocks of which are in -cated both: by the reference numeral 6; and the reference numeral 7 desvnates a hollow cover plate .secured to the forward end of the cylinder blocks as by means of a series of cap screws 8 and which cover plate is shown as enclosing the driving mechanism through which the valve operating shaft 9 of the engine is driven from the crank shaft .10 thereof;- the driving mechanism illustrated comprisin'g a pair of 2 tol gears l1` 12, together with an intermediate idler fear 18 throu h which motion is communicated from t e gear 11 to the gear l2 at half speed, as is usual in internal combustion engines operating upon a four stroke cycle.

Secured to the cover 7 as by means of the calp screws 14 is a casing member 15 the si e of which next to the front face 16 of the cover 7 is open; so that said casinar member forms, in connection with the en wall or front face 16 of the cover, a pump chamber within which the rotatindg impeller 17 of the lump is located; an from the peri hery 1 of which pump chamber two disc arge passages, both designated by the reference numeral l119, lead tohjacket acesor aa ofteeinetro iirPhich strems dgfescoolin lidiiid are to made to flow. A single inlet paa 20 is provided through which the cooling liquid enters the ump chamber formed by the casin 15 and the cover 7, and said cooling liqui is forced by the impeller through the two discharge passages and to two jacket spaces or passages adjacent parts of the engne to be cooled; said passages in the embodiment of my invention illus trated communicating with conduits 21, 21 extending through the cover?, and communicatin with conduits 22 formed in the two cy Inder blocks and through which conduits coolihg li uid s supplied to the cylinder jackets an to head jackets of thelengine illustrated; one conduit being asso ciated with each of the two cylinder blocks 6, 6, and the cooling liquid su plied therethrough being dischar d part y to the clylinder jacket space an cpartly to the {ac et s ace within the hea of each cy inder blccki It will be ap reciated, however, that the invention to which this patent a plication relates contemplates merely t e discharge of coolin liquid through a con duit leading from t e interior of thepump to apart of the engine to be cooled, irrespective of the character of the part or e ement which is rovided with a 'acket space to which sai conduit leadsi1 an into which jacket space the same disc urges.

The rotating impeller 17 is driven from the valve operating shaft 9 of the enine in the embodiment of my invention i trated through a driving shaft 23 which is supported in a bearing provided in the cover 7, or rather in the end wall or head 16 thereof, the said shaft being shown as provided with a key at its inner end which enters into a slot provided in a screw 24 which holds the gear 12 upon the said shaft. The pump impeller in uestion is itself supported upon a boss 25 ormed integrally with the end wall 16 of the cover 7; and the outer end of the driving shaft 23 is bifurcated, see Figure and engages a cross-bar 26 of a driving member 27 having oppostely located lugs 28 which enter recesses provided in the hub of the im peller, and through which driving connection the impeller will bc driven from the driving shaft 23, as will be appreciated.

mvided with a The casing member 15 is 08e to the outer central boss- 29 which lies surface of the driving member 27 when the parts are assembled, as best shown in Figure 3, to thereby prevent the driving mem, ber from becomin disey from the shaft of the im er an members in proper driving relation with one another. It will therefore be appre ciated that upon removing 'the pump casing member 15 access may be had to the impeller, and that the impeller may be then removed from the boss whereby it is maintain said supported; and it will be further appreciatcd that the weight of the impeller is borne by the boss 25, andthat the driving shaft 23 is subjected to no strains other than .to torsion strains due to the driving of the impeller when the pump is in use.

A suitable packing is prefearbly provided at 80, the Same being located within i.

a suitable stniling box through which the driving; shaft 23 extends, to thereby prevent t e Bow of cooling liquid along the drivin shaft; and, in order to prevent such liquid as may perhaps leak along said driving shaft from passing into the ace in which the driving mechanism enclose by centrifugal force because of the circumfer-V entially extending ridge 33 .provided u on said shaft. The cooling liquid which us reaches the leak chamberis conducted therefrom through a leak. passage 34 formed in the cover 7, and which leads to the interior thereof; from which it follows that such liquid as may leak along the drive shaft will bedprevented from entering the space enclose by the cover 7 and contaminating the oil therein.

Having thus described and explainedmy invention, I claim and desire to secure by Letters Patent:

1. In combination in an internal combus tion engine havin a jacket space through which a cooling liquid may flow, and driving mechanism through which the valve op erating shaft of the engine is driven from commonly present the crank shaft thereof; a cover secured to` the engine and enclosin said driving mechanism; a casing mem er secured to said cover and cooperating therewith to form a pump chamber; a discharge conduit leading from said pump chamber through said cover and discharging into the jacket snace aforesaid, and through which a stream ot cooling li uid is supplied thereto; a rotating impeller located within said pump chamber; s driving shaft located in line with thevalve operating shaft of the engine and with w ich said valve operating ftiso tive1yconnected;aboss 'formed within said pum chamber and surrounding-t said driving ftand upon which boss sai rotating im is sup rted; and driving means intermediate sai drivli shaft and said impeller and through w 'ch said impeller is driven from said driving shaft.

2. In combination in an internal combustion engine having a jacket space through whicha'cooling liquid may Bow, and driving mechanism through which the valve cperating shaft of the engine is driven from the crank shaft thereof; a cover secured to the engine and enclosingesaid driving mechanism; a casing mem r secured to said cover and co-opcrating therewith to -form a pump chamber; a discharge passage leadin from said pump chamber; a boss located wi hin said pum chamber; an impeller located within sai pump chamber and rotatable upon said boss as a support; a driving shaft rotatable in a bearing provided in said cover andthe outer end of which shaft extends through said boss and terminates adjacent the interior of said casing member; a driving member driven by said driving shaft and held in operativo relation thereto by said casing member, and which driving' member is operatively connected with said im ller to drive the same; means whereby sai drivin shaft is driven from the valve operating s aft of the engine; and a'conduit leading from said discharge pas` to the jacket space aforesaid and throu h which a stream of cooling liquid is supplied thereto.

8. In combination in an internal combustion engine havi a jacket space through which a cooling hquid may dow, and driving mechanism throu h which a shaft of the engine is driven m the crank shaft thereof; a cover secured to the engine 4and enclosing said driving mechanism, and ing which cover is provided with an internal leak chamber; a casing member secured to Vsaid cover and co-operatin therewith to l form a pump chamber; a lea assage leading from said leak chamber to t e outside of said cover; a dischar ge leading and discharging from said ump chamber into the ja et space aforesaid and through which passage a stream of cooling liquid is supplied thereto; a rotatineimpeller lo-I oated'within said pump cham r; a drivin shaft rotatable in a bearing provided in sai cover and which -driving shaft extends through the leak chamber aforesaid and is operatively connected with said impeller to drive the same; and means for driving said driving shaft.

4. In combination in an internal combustion engine havin a jacket space lthro h which a cooling liuid may dow, end dihrmg mechanism through which the valve operating shaft of the engine is driven from the crank shaft thereof; a cover secured to the engine and enclosingesaid drivingl mechanism; a casing inem r secured to said cover and co-operat' therewith to form a ump chamber; a passage leadin m said pump chamber; a driving sha rotatable in a bearing provided in said cover, and which driving shaft is driven from the valve operat' shaft of the enine; a boss located within said pump chamr and surroundin said driving shaft; an im ller located wit said pump chamber an rotatable upon said boss a's a su port; a driving member with which the endpof said driving shaft is operatively connected, and which driving member is4 operatively, connected with said im'peller to thereby drive the same; and a conduit leading from said um chamber; a discharge p leadiiig fiom said pum chamber; a lig chamber formed in sai cover; a drain conduit leading from said leak chamber to the exterior of said cover; a driving shaft rotatable in a provided in said cover,

said ving' shaft is driven from the` ve o shaft of .the engine; a boss located within said pum chamber and surrounding said drivlaft; an impeller located within said pump chamber and rotatable upon said boss as a support; driving means throu h which said impeller is driven from sai shaft; and a conduit leading from said discharge passage to the jacket space aforesaid and 'through which a stream of cooling liquid is supplied thereto.

In comlinaton in xiii internal cagliari tionengine avingaj etapa/cet u which a cooling liquid may flow, and drigving mechanism through which the valve operating shaft of the engine is driven from the crank shaft thereof; a cover secured to the engine and encl said driving mechanism; a casing mein rsecured to said-cover and co-operatin therewith to form a pum chamber; a leak chamber formed in said cover; a driving shaft roand which shaftextends thro h saidleak. chamber; mea-ns whereb l r scoured to said.

tatable in a bearing provided in said cover, and which shaft extends through the leak chamber aforesaid; means whereby said driving'haft is driven from the valve operating s ft of the engine; a disc pas sage leading from seid pump cham r; a rotating impeller located within said pmn chamber; means whereby and throu li vhich sadtimpedlrlr is driven from id riv1nsa;a mass leading m said lik chamber to like aegiiterior of said cover; und a conduit leadin from said discharge passage through said cover and to the jacket space aforesaidA and through which a stream of cooling liquid is supi plied thereto.

7. In comllination in alli` internal cpmhusl; tion engine aving' a jac et space t rou which a cooling liquid may ow,.and drigving mechanism through which thei valve operating shaft of the engine is driven from the crank shaft thereof; a cover securedto the engine and enclosing said driving mechanism; a casing member secured to said cover and cooperating therewith to form e pump chamber; a dischar e passage leadmg from said pump cham r through said cover and dischar -into the jacket space aforesaid, and t rough Jhich essa e a stream of cooling li uid is su pied tiereto; a rotating impe er loca within said pump chamber; and means whereby and through which said impeller is operated from the valve operating shaft of. the enurme D 8. In combination in an internal combustion engine having a jacket space through which a cooling liquid may How, and driv ing mechanism through whch the valve operating shaft of the engin is Vdriven-from the crank shaft thereof; V1?' cover secured to the engine and enclosing said driving mechanism; n casing me er Secured to said cover and (xo-operating therewith to form a pum chamber; a discharge passage `leadmg om said ump chamber; a shaft rotatable m a bearing providedin said cover; means whereby said driving shaft is driven from the valve operatin shaft of the engine; a boss carried by sai cover and surrounding said driving shaft; a rotating inipcller located within said ump chamber and supported by said boss; driving means through which Said impeller is driven from said drivin shaft; and a conduit leading irom saidY harge passage to the jacket space. aforesaid and through which a stream of cooling liquid is su )plied thereto. Q

9. n combination in an internal combustion engine having a jacket s ace thx-ou h which a cooling liquid ma ow, and rivi mechanism through w ich a shaft of tie engine is driven from the crank shaft thereof; a cover secured to the engine and enclosing said driving mechanism; a member secured to said Acover and co-operatin therewith to form a pump chamber; a. disc ar l passage leading from said pump chamber t ough said cover and discha mgl into the jacket space aforesaid, anr t rough which a stream of cooling liquid is supplied thereto; and a rotating impeller located within said pump chamber.

l0. ln combination in an internal combustion engine having u jacket e ace thrm fh which a Vcooling liquid ma ow, and riving mechanism through w ich a shaft of the engine muy be driven from the crank shaft thereof; a cover secured to the cugino and enclosing said driving mechanism; a cng member secured to said cover and co-operatin therewith to form a pump chamber; a di arge passage lead' said um chambera rotating impe er locato wi in'said chamber; driving means through which said impeller is driven from' and by the engine; and a conduit leading from said discarge passage to the jacket space aforesaid and through which a stream of cooling li uid is supplied thereto.

l1. In com ination in an internal combusv from tion engine having a jacket space through -ber and rotatable u on said boss as a support; a driving sha t rotatable in a bearing provided in said cover and the outer end of which shaft extends through said boss and terminates adjacent the interior of said cusin' member; a drivi member driven by said driving shaft and eld in operative relas tion thereto by said casing member` and which driving member is operatively connected with said impeller to drive the same; means for driving said driving shaft from and by the en ine; and a conduit leading from said (lisier e passage to the jacket space aforesaid and through which a stream of cooling liquid is supplied thereto.

12. Iii-combination in un internal combustion engine having a jacket s ace through which a cooling liquid may ow; a cover secured to the engine, and which cover is provided with an internal leali chamber; a leak passage leading from said leak chamber to the outside of said cover; a casing member secured to said cover and having a pump chamber; a discharge passage leading from said pump chamber and discharging into the jac ct space aforesaid and through which passage a stream of cooling liquid is supp icd thereto; a rotatable impeller located within said pump llU chamber; a driving shaft rotatable in a bearing-provided in said cover and which shaft extends through the leak chamber aforesaid, and is operatively connected with said impeller to drive the same; and means for-driving said driving shaft.

.13. In combination in'an internal combustion engine having 'a ljacket space through which a cooling liqui may flow; a

cover secured to the engine; a casing member secured to said cover and co-operating therewith to form a pump chamber; a dischar passa leadin from said pump chanier; a ld'iving s aft rotatable in a bearing provided in said cover; means whereby said driving shaft is driven from the engine a boss carried l said cover and surrounding said driving aft; a rotating imieller located within said pump chamber 10 an su ported bysaid bom;

anism irough which said impeller is driven from said driving shaft; and -a conduit leading from said discharge vpassage to the jacket spr-:e aforesaid and through which s u stream of cooling liquid is supplied thereto.

14. In combination in an internal combastion engine having a jacket s ace through which a cooling liquid may ow;

a cover secured to the engine' a casing 'l0 member secured to saidV cover an co-operating therewith to form a pump chamber; a discharge aie leading -om said ump chamber t oug said cover and disc arging into the jacket space aforesaid, and u through which a stream of cooling liquid is supplied thereto; s, rotating impeller located within said ump chamber; and means for driving said rotating impeller.

15. In combination in an internal combastion engine having a jacket ace through 'which a cooling liquid may ow; V a cover secured tothe enginea ump casingvsecured to said cover; a isc arge passa leadin'g from said pum casin a rota ing impellcr located wit sai pum casin driving means throu which sai im er. is driven from and. y the engine; an a conduit leading from said discharge passage through said cover and to the jacket s ace aforesaid, and through which conuit a stream of cooling liquid is supplied to said jacket space. l

16. In combination in an internal conabustion engine having a lurality of cylinders provided each wit a jacket space through which a cooling liquid Ama flow, and driving mechanism through whichv the valve o rati shaft of the engine is driven from t e cra shaft thereof; a cover secured to the engine and enclosing said driv- V ing mechanisin a casingniember secured to said cover and cooperating therewith to form a pump -chamber, and which pump chamber is provided with a single inlet passage and with a plurality of outlet passages driving mechc leading one to each of the jacket spaces aforesaid; and a rotating impeller located within said pump chamber.

17. In combinationI in an internal combustion engine having two cylinders provided each with a jacket space through which a cooling liquid ma dow, and driving mechanism through which a shaft of the engine is driven from the crank shaft thereof a cover secured to the engine and enclosing said driving mechanism; a casing member secured to said cover and oo-operatin therewith to form a pump chamber and w ich pump chamber 'is provided with a single inlet passage, and with two discharge conduits leading through p .w provided in said cover and communicating one with each of the jacket spaces aforesaid and a rotating impelle'r located within said pump b 18. In comhiation in in aiilternl cilimustion 'ne aving a ur ty o` cy inders pred 'each with a jacket ace throigh .which a cooling liquid may and riving mechanism through which the valve operating shaft of the engine is driven from the crank shaft thereof; a cover secured to the engine and enclosing said driving mechanism; a casing member se! cured to said cover and cia-operating therewith to'form a pump chamber; a le inlet aage leading into, and a plur ity of out t passages leading from said pump chamber; a rotating impeller located within said pump chamber; and a plurality of conduits eading one from each of said discharge passages to the jacket space afore- 'said of one of said cylinders,.and through which conduits separate streams of coolin liquid are 4supphed one to each of sai jackets.

19. In combination in an internal combuston engine ha a jacket ace through which a coolingliquid may ow; a cover secured to the engine and which cover ls'provided with an internal leak chamber; a casing member secured to said cover and cti-operating therewith to form a pump chamber; a leak passage leading from said leak illisiber to the oultilge of 2id cover; a ar passage m said pump chsmr and discharngg into the jacket space aforesaid and through which a stream of cooling liquid is su pied t creto; a rotating impeller locate within said chamber; a dri shaft rotatable in a boerin provided in said cover and which driving shaft extends through the leak chamber aforesaid, and is operatively connected 4with said impeller to drive the same; a stu box carried by saidcover and through w ich said drivin shaft extends; and means for driving sai driving shaft.

20. In combination in an internal ccmbul l tion engine having a casing, and a jacket space through which a coolmg liquid may flow; e cover secured to the en e and clos- 'mg an opening inthe casin t ereof; a casing member secured to sai' cover and cooperating therewith to form a pump chamber; a discharge passage leading from said pump chamber; a rotating impeller located within said chamber; driving means covered b said cover and through which said impe ler is driven from and by the engine; and rt conduit leading from said discharge passge to the jacket space aforesaid and through which a stream of cooling li uid is supplied thereto.

n testimony whereof I aix my signature.

ARTHUR A. BULL. 

